How much resistance is needed to draw 17.6 mA from a 12 volt source?
A.212 ohms
B.6.8 kohms
C.68 ohms
D.680 ohms
Description : How much resistance is required to limit the current from a 12 V battery to 3.6 mA? A.3.3 k ohms B.33 k ohms C.2.2 k ohms D.22 k ohms
Last Answer : How much resistance is required to limit the current from a 12 V battery to 3.6 mA? A.3.3 k ohms B.33 k ohms C.2.2 k ohms D.22 k ohms
Description : When there is 12 mA of current through a 1.2 k ohms resistor, the voltage across the resistor is? A.14.4 V B.1.4 V C.100 V D.10 V
Last Answer : When there is 12 mA of current through a 1.2 k ohms resistor, the voltage across the resistor is? A.14.4 V B.1.4 V C.100 V D.10 V
Description : When converting 0.16 mA to microamperes, the result is? A.16 μA B.160 μA C.1,600 μA D.0.0016 μA
Last Answer : When converting 0.16 mA to microamperes, the result is? A.16 μA B.160 μA C.1,600 μA D.0.0016 μA
Description : Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor? A.4 ohms B.400 ohms C.4 kohms D.4.4 ohms
Last Answer : Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor? A.4 ohms B.400 ohms C.4 kohms D.4.4 ohms
Description : The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately? A.112 ohms B.11.2 ohms C.1.2 ohms D.18 ohms
Last Answer : 112ohm
Description : When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is?
Last Answer : If v = 1 volt and i = 1 micro amp, i= 10^(-6) So R = V/I, R= 1/10^(-6) , R= 10^6 And now Conductance G = 1/R So G = 10^(-6) mho..... Answer
Description : How much current does a 1500 Watt heater draw if supplied with a 120 Volt source?
Last Answer : ANSWER: 12.5 AMPS
Description : Which of the following statements is true if a 100 watt lamp and a 75 watt lamp are connected in parallel across a 100 volt power supply? A. The 75 watt lamp will draw as much current as the 100 ... Current flow will be the same across each lamp. D. The 75 watt lamp will have a higher resistance.
Last Answer : Answer: D
Description : A resistance of 3.3 M ohms is connected across a 500 V source. The resulting current is approximately? A.15.1 μA B.151 μA C.66 mA D.660 mA
Last Answer : A
Description : An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately? A.385 ohms B.38.5ohms C.3.1 ohms D.31 ohms
Last Answer : 31ohns
Description : In the illustrated circuit 'A', what power is consumed by a 3 ohm resistor with a 12 volt source? EL-0041 A. 12 watts B. 48 watts C. 64 watts D. 232 watts
Last Answer : Answer: B
Description : In the adjoining circuit, the battery `E_(1)` has an e.m.f me of 12 volt and zero internal resistance while the battery E has an e.m.f me of 2volt . I
Last Answer : In the adjoining circuit, the battery `E_(1)` has an e.m.f me of 12 volt and zero internal resistance while the ... ohm is A. 250 B. 100 C. 50 D. 200
Description : A coil is wound with 400 feet of No. 16 tinned copper wire and connected to a 12 volt battery. What is the current if the resistance per 1000 feet of No. 16 tinned copper wire is 4.26 ohms? A. 4.8 amps B. 7.06 amps C. 10.65 amps D. 11.27 amps
Description : A coil is wound with 200 feet of No. 16 tinned copper wire and connected to a 12 volt battery. What is the current if the resistance per 1000 feet of No. 16 tinned copper wire is 4.26 ohms? A. 1.14 amps B. 7.04 amps C. 10.22 amps D. 14.08 amps
Description : How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor? A.50 V B.500 V C.80 V D.8 V
Last Answer : 500 V
Description : What current is required to light two 75 watt lamps and one 40 watt lamp when connected in series to a 120 volt power source? A. 0.161 amperes B. 0.631 amperes C. 1.583 amperes D. 6.199 amperes
Last Answer : Answer: C
Description : What is the total resistance of the electrical circuit illustrated if the resistance of R1 is 2 ohms, R2 is 4 ohms, and R3 is 4 ohms with a 6 volt battery? EL-0021 A. 0.01 ohms B. 0.10 ohms C. 1.00 ohms D. 10.00 ohms
Description : What is the total current in the illustrated circuit with a 6 volt battery if the resistance of R1 is 2 ohms, R2 is 4 ohms, and R3 is 4 ohms? EL-0021 A. 0.6 amp B. 1 amp C. 4 amps D. 6 amps
Description : What wire size needed for 120 volt 3000 watt load?
Last Answer : AWG # 10 wire on 30 amp circuit.
Description : What is the amp draw for a 3800 watt 240 volt water heater?
Last Answer : What is the answer ?
Description : A battery is connected to a circuit containing three resistors in parallel. The values of the three resistors are 2 ohms, 3 ohms, and 6 ohms. What is the voltage of the battery if the total circuit current is 12 amps? A. 2 volts B. 6 volts C. 12 volts D. 24 volt
Description : In the illustration, A, B, C and D are 12 volt batteries. a voltmeter across the output of the circuit will indicate _____________. EL-0039 A. 6 volts B. 12 volts C. 24 volts D. 48 volts
Description : If a 6 volt battery were connected in series with a 24 volt battery by putting their negative terminals together, what would be the result? A. 'Zero' volts B. 12 volts of the opposite polarity C. 18 volts, positive on the 24 volt battery D. 30 volts, negative on the 24 volt battery
Description : The starting motor used on a powerine tractor may be of a) 6 or 12 volt type b) 12 or 24 volt type c) 16 or 24 volt type d) 6 or 24 volt type
Last Answer : a) 6 or 12 volt type
Description : Battery operated sprayer consists of 10 lit capacity tank and rechargeable battery. b. 10 Volt c. 12 Volt. d. None of above Ans- a. 6 Volt
Last Answer : Ans- a. 6 Volt
Description : In order to get maximum power transfer from a capacitive source, the load must? A.have a capacitive reactance equal to circuit resistance B.have an impedance that is the complex conjugate of the source impedance C.be as capacitive as it is inductive D.none of the above
Last Answer : In order to get maximum power transfer from a capacitive source, the load must? A.have a capacitive reactance equal to circuit resistance B.have an impedance that is the complex conjugate of the source impedance C.be as capacitive as it is inductive D.none of the above
Description : The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 ohms load. The turns ratio is 3:1. What is the secondary voltage? A.2 V B.20 V C.180 V D.18 V
Last Answer : The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 ohms load. The turns ratio is 3:1. What is the secondary voltage? A.2 V B.20 V C.180 V D.18 V
Description : The turns ratio required to match an 80 ohms source to a 320 ohms load is? A.80 B.20 C.4 D.2
Last Answer : c
Description : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Last Answer : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Description : Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k ohms of resistance? A.27.2 mA B.59 mA C.5.9 mA D.590 mA
Last Answer : Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k ohms of resistance? A.27.2 mA B.59 mA C.5.9 mA D.590 mA
Description : Which of the following minerals is a source of iro w) Bauxite (pron: box-ite) x) Hematite (pron: he-ma-tite) y) Malachite (pron: mal-ah-kite) z) Galena (pron: ga-lee-nah)
Last Answer : ANSWER: X -- HEMATITE
Description : Resistance
Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
Description : The minimum resistance value for a blue, gray, red, silver resistor is? A.612 ohms B.6,120 ohms C.6,800 ohms D.6,460 ohms
Last Answer : The minimum resistance value for a blue, gray, red, silver resistor is? A.612 ohms B.6,120 ohms C.6,800 ohms D.6,460 ohms
Description : If an incandescent lamp of 80 ohms resistance takes a current of 0.75 ampere, what voltage is required to light it? A.45 volts B.60 volts c.23 volts D.None of these
Last Answer : V=IR = 80*0.75 = 60 volts
Description : Resistance is measured in? A.henries B.ohms C.hertz D.watts
Last Answer : Ohms
Description : What amount of current will flow through resistance of 10 ohms when it is connected across a potential difference of 20 volts? A.30 amperes B.5 amperes C.10 amperes D.2 amperes
Last Answer : 2 amperes
Description : If the diameter of a conductor of 10 ohms is doubled, its new resistance would be? A.20 ohms B.5 ohms C.40 ohms D.2.5 ohms
Last Answer : 4
Description : Temperature co-efficient of resistance is expressed in terms of?
Last Answer : Degree celsius
Description : International ohm is defined in terms of the resistance of?
Last Answer : International ohm is defined in terms of the resistance of a column of mercury.
Description : When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will?
Last Answer : When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will increase.
Description : In a lamp load when more than one lamp are switched on the total resistance of the load?
Last Answer : In a lamp load when more than one lamp are switched on the total resistance of the load decreases.
Description : Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as?
Last Answer : Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 2 : 5.
Description : Resistance of a material always decreases if?
Last Answer : Resistance of a material always decreases if number of free electrons available become more.
Description : The hot resistance of the bulb's filament is higher than its cold resistance because the temperature co-efficient of the filament is?
Last Answer : This is because resistance of a conductor increases with increase in temperature .
Description : A closed switch has a resistance of?
Last Answer : A closed switch has a resistance of zero.
Description : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?
Last Answer : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.4 ohm.
Description : The resistance of a few meters of wire conductor in closed electrical circuit is?
Last Answer : The resistance of a few meters of wire conductor in closed electrical circuit is practically zero.
Description : With rise in temperature the resistance of semi-conductors?
Last Answer : With rise in temperature the resistance of semi-conductors decreases.
Description : With rise in temperature the resistance of pure metals?
Last Answer : With rise in temperature the resistance of pure metals increases.
Description : The resistance of a conductor varies inversely as?
Last Answer : The resistance of a conductor varies inversely as area of cross-section.