Description : How does a compass react when placed close to a current carrying conductor?
Last Answer : The compass needle swings away from magnetic north and aligns itself with the magnetic field around the conductor
Description : How would the compass react if the alternating current through the conductor was a high frequency?
Last Answer : The compass needle would vibrate rapidly around the zero current point ac meter (magnetic north).
Description : What is the device called that will separate alternating current from direct current, or that will separate alternating current of one frequency from other alternating currents of different frequencies?
Last Answer : A filter.
Description : 9. When is the force experienced by a current–carrying conductor placed in a magnetic field largest? -Physics-10
Last Answer : When the direction of the current is perpendicular to the direction of the magnetic field is when the force experienced is the largest.
Description : With the help of a diagram of experimental setup describe an activity to show that the force acting on a current carrying conductor placed in a magnetic field increases with increase in field strength. -Science
Last Answer : Magnetic Effects of Electric Current Chapter Wise Important Questions Class 10 Science October 1, 2019 by Bhagya Important Question for Class 10 Science Magnetic Effects of Electric Current PDF ... a current carrying conductor placed in a magnetic field increases with increase in field strength.
Description : For what position of a current carrying conductor placed in a magnetic field, the maximum force acts on it? -Science
Last Answer : To obtain the maximum force acting on the current carrying conductor placed in a magnetic field, the conductor should be placed perpendicular to the magnetic field, i.e. the direction of current should be at right angle to the direction of the magnetic field.
Description : State the expression for the magnetic force on straight current carrying conductor placed in uniform magnetic field
Last Answer : State the expression for the magnetic force on straight current carrying conductor placed in uniform magnetic field
Description : A sqaure loop `ABCD`, carrying a current `I_(2)` is placed near and coplanar with a long straight conductor `XY`, carrying a current `I_(1)` as shwon
Last Answer : A sqaure loop `ABCD`, carrying a current `I_(2)` is placed near and coplanar with a long straight conductor `XY` ... )/(2pi)` D. `(2mu_(0)Ii)/(3pi)`
Description : Basic electrical motor action depends on _______________. A. a conductor rotated within a magnetic field B. a current carrying conductor placed in a magnetic field C. the relative force of the commutator and commutating poles D. the relative force of the armature and interpoles
Last Answer : Answer: B
Description : What causes the current-carrying area at the center conductor of a coaxial line to be restricted to a small layer at the surface?
Last Answer : Skin effect.
Description : Type of power-line frequency meter composed of vibrating iron reed placed in alternating magnetic field
Last Answer : Vibrating Reed Type
Description : How does a capacitor and an inductor react to (a) low frequency and (b) high frequency?
Last Answer : At low-frequency, a capacitor acts as an open and an inductor acts as a short. At high-frequency, a capacitor acts as a short and an inductor acts as an open.
Description : A cable carrying alternating current has (a) hysteresis losses only (b) hysteresis and leakage losses only (c) hysteresis, leakage and copper losses only (d) hysteresis, leakage, copper and friction losses
Last Answer : (b) hysteresis and leakage losses only
Description : One method of testing for a reversed shunt field coil in a DC generator or motor is by connecting the field to a direct current source, at reduced field rated voltage, and test for ... placed near each field C. test lamp across adjacent fields D. copper jumper across the interpole connections
Description : A current-carrying conductor making electrical contact with a wiring conduit will be indicated by a _____________. A. high switchboard wattmeter reading B. totally dark switchboard ground detecting light C. low switchboard wattmeter reading D. all of the above
Description : A current-carrying conductor makes accidental contact with a wiring conduit. This will be indicated by a _____________. A. low switchboard wattmeter reading B. high switchboard wattmeter reading C. darkened switchboard ground detecting lamp D. darkened switchboard synchronizing lamps
Last Answer : Answer: C
Description : A current carrying conductor making an electrical contact with a wiring metal conduit is indicated by a _____________. A. low switchboard wattmeter reading B. reading of 1.0 on the power factor meter C. high switchboard voltmeter reading D. totally darkened switchboard ground-detecting light
Last Answer : Answer: D
Description : What is a nonrotating device that produces alternating current?
Last Answer : Oscillator.
Description : Define alternating current.
Last Answer : An electrical current which is constantly varying in amplitude, and which changes direction at regular intervals.
Description : Why are synchro capacitors placed physically close to differentials transmitters and CTs?
Last Answer : To keep the connections as short as possible in order to maintain system.
Description : If a transmitting antenna is placed close to the ground, how should the antenna be polarized to give the greatest signal strength?
Last Answer : Vertically polarized.
Description : What are the 3 waves of power supply that uses three conductors all carrying alternating currtent is?
Last Answer : Feel Free to Answer
Description : In step 4 of the construction of a perpendicular line through a point why must the compass point be placed on the points where the arc intersects with the original line How would the construction be d?
Last Answer : What is the answer ?
Description : A sinusoidally alternating current of frequency 60 Hz has a maximum value of 15 A. Find the value of current after 1/200 second
Last Answer : A sinusoidally alternating current of frequency 60 Hz has a maximum value of 15 A. Find the value of current after 1/200 second
Description : Which of the following statements concerning AC circuits is correct? A. The power factor of a resistive circuit is always zero. B. True power in an inductive circuit always equals apparent power. ... . D. Total opposition to the flow of alternating current depends upon the amount of reactive power.
Description : The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is increased to 100 Hz, the reactance will be (a) 2.5 ohm (b) 5.0 ohm (c) 20.0 ohm (d) 40.0 ohm
Last Answer : Xc = 1/(2*pi*f*c) so when f is double .... Xc will be half ... Ans is 5ohm
Description : The frequency of an alternating current is?
Last Answer : The frequency of an alternating current is the number of waves passing through a point in one second.
Description : The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_____ohms.
Last Answer : The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes 10 ohms.
Description : A compass is located at the geographical North Pole. In which direction would its needle point?
Last Answer : To the magnetic north pole.
Description : Why and when does a current carrying conductor kept in a magnetic field experience force? List the factors on which direction of this force depends? -Science
Last Answer : The drifting of free electrons of a conductor in a definite direction causes the current to flow through it. When such conductor is placed in a uniform magnetic field, each drifted electron of a ... depends on (i) direction of current through the conductor, and (ii) direction of magnetic field.
Description : (a) Describe activity with labelled diagram to show that a current carrying conductor experience a force in a magnetic field. (b) State the rule to determine the direction of force. -Science
Last Answer : (a) Without using a magnet, magnetic field can be produced by flowing the current through a straight conductor or a solenoid. Aim : To show that magnetic field exerts a force on a current carrying ... current, then the thumb will point in the direction of motion or the force acting on the conductor.
Description : What is the effect of external magnetic field on current carrying conductor?
Last Answer : What is the effect of external magnetic field on current carrying conductor?
Description : A hydrogen atom in the normal state is located at a distance `r = 2.5 cm` from a long straight conductor carrying a current `I = 10A`. Find the maximu
Last Answer : A hydrogen atom in the normal state is located at a distance `r = 2.5 cm` from a long straight ... = 10A`. Find the maximum force acting on the atom.
Description : The force between two long parallel wires A and B carrying current is `0.004 Nm^(-1)`. The conductors are 0.01 m apart. If the current in conductor A
Last Answer : The force between two long parallel wires A and B carrying current is `0.004 Nm^(-1)`. The conductors are 0.01 m ... . `50 A ` C. `10 A` D. `100 A`
Description : A good conductor while carrying current is - (1) alternately charged positive and negative (2) negatively charged (3) positively charged (4) electrically neutral
Last Answer : (2) negatively charged Explanation: Electrons carry current in a good conductor of electricity and they are negatively charged. This makes a good electrical conductor negatively charged.
Description : A current carrying conductor is associated with – (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field
Last Answer : (3) an electro-magnetic field Explanation: A current carrying conductor, such as a metal wire, will produce a magnetic field around it because of the motion of charge within the wire itself. This motion produces or sets up a magnetic field around the wire in the form of concentric circles.
Description : The torque expression of a current carrying conductor is a) T = BIA cos θ b) T = BA cos θ c) T = BIA sin θ d) T = BA sin θ
Last Answer : c) T = BIA sin θ
Description : Find the Lorentz force due to a conductor of length 2m carrying a current of 1.5A and magnetic flux density of 12 units. a) 24 b) 36 c) 32 d) 45
Last Answer : c) 32
Description : Find the flux density due to a conductor of length 6m and carrying a current of 3A(in 10 -7 order) a) 1 b) 10 c) 100 d) 0.1
Last Answer : a) 1
Description : Find the height of an infinitely long conductor from point P which is carrying current of 6.28A and field intensity is 0.5 units. a) 0.5 b) 2 c) 6.28 d) 1
Last Answer : b) 2
Description : Fleming's left hand rule is used to find (a) direction of magnetic field due to current carrying conductor (b) direction of flux in a solenoid (c) direction of force on a current carrying conductor in a magnetic field (d) polarity of a magnetic pole
Last Answer : (c) direction of force on a current carrying conductor in a magnetic field
Description : Which of the following is the demerit of a 'constant voltage transmission system' ? (a) Increase of short-circuit current of the system (b) Availability of steady voltage at all loads at ... of carrying increased power for a given conductor size in case of long-distance heavy power transmission
Last Answer : (a) Increase of short-circuit current of the system
Description : The thickness of the layer of insulation on the conductor, in cables, depends upon (a) Reactive power (b) Power factor (c) Voltage (d) Current carrying capacity
Last Answer : (c) Voltage
Description : A current carrying conductor is associated with (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field
Last Answer : an electro-magnetic field
Description : A good conductor while carrying current is (1) alternately charged positive and negative (2) negatively charged (3) positively charged (4) electrically neutral
Last Answer : negatively charged
Description : A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be
Last Answer : A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be 2.4 N.
Description : The insulation on a current carrying conductor is provided?
Last Answer : The insulation on a current carrying conductor is provided to prevent leakage of current, to prevent shock.
Description : A non - popular loop of conducting wire carrying a current `I` is placed as shown in the figure . Each of the straighrt sections of the loop is of the
Last Answer : A non - popular loop of conducting wire carrying a current `I` is placed as shown in the figure . Each of the ... `(1)/(sqrt(2))(hat(i)+hat(k))`
Description : Assertion Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) is zero. Reasonl Magnetic moment (M) is inward
Last Answer : Assertion Net torque in the current carrying loop placed in a uniform magnetic field (pointing inwards) ... . Reasonl Magnetic moment (M) is inwards.