Last Answer : Req= (1/1200 +1/560 + 1/2.1)^-1 = 2.1 ohms RT= 2.1 + 7.8 = 9.9 ohms IT = V/R = 24/9.9 = 2.4 A Veq= R I = 2.1 2 ... 7.8 = 12.096 w = 44.928 w _________________________________________ By: Ellis-Junior Kamatjipose [email protected]
Description : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the polarity as indicated. The ratio of potential difference acro
Last Answer : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the ... difference across `5Omega` and resistance `R` is
Description : In an AC circuit, the voltage across R, L and C are 30 V, 60 V and 20 V respectively. The applied voltage is (A) 70 V (B) 50 V (C) 60 V (D) 100 V
Last Answer : In an AC circuit, the voltage across R, L and C are 30 V, 60 V and 20 V respectively. The applied voltage is 50 V
Description : Blue red green yellow four Olympic rings colour what's missing
Last Answer : Black
Description : If current of 20 mA is passing through op-amp and voltage drop across series resistor is 10 V then value of resistance is A. 500Ω B. 400Ω C. 300Ω D. 200Ω
Last Answer : 500Ω
Description : A resistor of value R/2 is connected in parallel with a resistor of value R/3. The voltage drop across the parallel combination is V. The total current supplied by the voltage source is: w) 2 V/R (read: 2 V over R) x) 3 V/R (read: 3 V over R) y) 4 V/R (read: 4 V over R) z) 5 V/R (read: 5 V over R)
Last Answer : ANSWER: Z -- 5 V/R
Description : With a 12 V supply, a silicon diode, and a 370 - ohm resistor in series, what voltage will be dropped across the diode? a) 0.3V b) 0.7V c) 0.9V d) 1.4V
Last Answer : 0.7V
Description : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - a) 15 mA b) 1.5 mA c) 10 mA d) 1 mA
Last Answer : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - 1.5 mA
Description : The colour bands on a carbon composition resistor occur in the sequence: yellow, violet, yellow and silver. Its resistance is (a) 470 KΩ ± 47 KΩ (b) 470 KΩ ± 23.5 % (c) 47 KΩ ± 10 % (d) 47 KΩ ± 5 %
Last Answer : The colour bands on a carbon composition resistor occur in the sequence: yellow, violet, yellow and silver. Its resistance is 47 KΩ ± 10 %
Description : What would be the voltage drop across the series resistor of the circuit shown in the illustration if the source is 30 volts, the resistance of R1 is 10 ohms, R2 is 10 ohms and R3 is 10 ohms? EL-0032 A. 5 volts B. 10 volts C. 20 volts D. 30 volts
Last Answer : Answer: C
Description : A permanent magnet moving coil instrument gives full scale deflection of 25mA when a voltage of 75mV is applied across it. Calculate: (i) Resistance of shunt required for full scale deflection of 150 A. (ii) Series resistance for full scale deflection of 500 V.
Last Answer : Answer :
Description : In an experiment on studying the dependence of current flowing through a given resistor on the potential difference applied across it, list two ways how a student would change the values of current in the circuit?
Last Answer : Answer. There are two ways in which a student can change the values of current in the circuit: By increasing or decreasing the number of cells. By changing the value of resistance.
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 : What is the value of a resistor color coded red-violet-silver-gold?
Last Answer : red = 2violet = 7silver = 0.01gold = 5%The value is 27 * 0.01 ohms 5% or 0.27 ohms 5%
Description : A resistor with the color coded value of 1000 ohms and ± 10% tolerance can have an actual resistance between ________. A. 990 ohm and 1010 ohm B. 900 ohm and 1100 ohm C. 1000 ohm and 1100 ohm D. 900 ohm and 1000 ohm.
Last Answer : A resistor with the color coded value of 1000 ohms and ± 10% tolerance can have an actual resistance between 900 ohm and 1100 ohm.
Description : Primary colurs in a visual display unit are
Last Answer : Red, Green, Blue
Description : 23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue
Last Answer : ANSWER: A
Description : Persons who are colour-blind cannot distinguish between – (1) yellow and white (2) green and blue (3) red and green (4) black and yellow
Last Answer : (3) red and green Explanation: A person with colour-blindness has trouble seeing red, green, blue, or mixtures of these colours. The most common type is redgreen colours - blindness, where red and green are as the same colour.
Description : Which combination of colour is the most convenient during day and night time? (1) Organe and blue (2) While and black (3) Yellow and blue (4) Red and green
Last Answer : (4) Red and green Explanation: Red and green is the most convenient combination during day and night time because of very precise visibility. In modem colour theory, also known as the RGB colour ... almost any colour. This is the principle used to make the colours on computer screen and television.
Description : In absence of atmosphere, the colour of sky appears (a) blue (b) black (c) red (d) yellow
Last Answer : (b) black
Description : Titanium dioxide is a/an __________ colour pigment. (A) White (B) Black (C) Yellow (D) Blue
Last Answer : (A) White
Description : Which combination of colour is the most convenient during day and night time ? (1) Organe and blue (2) White and black (3) Yellow and blue (4) Red and green
Last Answer : Red and green
Description : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a distance l and connected across a resistor R. T
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar ... to determine the direction and nature of the current
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a distance l ... apparatus? A. v B. l C. R D. B
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a ... i generated by the apparantus? B. C. D.
Description : Average power dissipated in resistor if sinusoidal p.d of peak value 25 V is connected across a 20 Ω resistor is A. 15.6 W B. 15 W C. 16 W D. 17 W
Last Answer : 15.6 W
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 : In a series RC circuit, 12 V (rms) is measured across.the resistor and 15 V (rms) is measured across the capacitor. The value of rms source voltage is: A. 3 V B. 27 V C. 19.2 V D. 1.9 V
Last Answer : In a series RC circuit, 12 V (rms) is measured across.the resistor and 15 V (rms) is measured across the capacitor. The value of rms source voltage is: 19.2 V
Description : As shown in the illustration, the direction of electron flow through the component is _______. EL-0079 A. from terminal 'B' to terminal 'A' B. from terminal 'A' to terminal 'B' C. determined by the polarity of the applied voltage D. opposite from that in a resistor
Last Answer : Answer: B
Description : The resistance of a carbon resistor of colour code Red-Red Green Silver is (in `k Omega`)
Last Answer : The resistance of a carbon resistor of colour code Red-Red Green Silver is (in `k Omega`) A. `22 00 pm 5%` ... pm 10%` C. `220 pm 10%` D. `220 pm 5%`
Description : What voltage would be measured across the 45 ohm resistor?
Last Answer : Not enough information. But if you know the current, you can useOhm's Law (just multiply the resistance times the current).
Description : For practical purposes, in a simple series circuit, the source voltage will be dropped across one resistor if it has ______________. A. half the resistance of the other resistor B. a resistance equal to the other C. at least ten times the resistance of the other D. a partial short circuit
Description : In a simple series circuit, the entire source voltage will drop across ______________. A. the resistor next to the negative terminal B. a short circuit C. the resistor next to the positive terminal D. an open circuit
Last Answer : Answer: D
Description : Which of the following statements concerning a simple parallel resistance circuit is correct? A. The voltage drop across each resistor is the same. B. The total current flow equals the reciprocal ... resistances. D. The total voltage equals the sum of the individual voltages across each resistance.
Last Answer : Answer: A
Description : In general, polyphase induction motors can be started on full line voltage by means of ______________. A. compensator starters B. autotransformer starters C. across-the-line starters D. primary-resistor starters
Description : Low horsepower, polyphase, induction motors can be started with full voltage by means of _____________. A. compensator starters B. autotransformer starters C. across-the-line starters D. primary-resistor starters
Description : Indicate the false statement A. The noise generated in a resistance or the resistive component of any impedance is random. B. Random noise power is proportional to the bandwidth over which is measured ... exist D. All formula referring to random noise are applicable only to the value of such noise.
Last Answer : C. A random voltage across the resistor does not exist
Description : If the current was increased to 4 amps, what would be the voltage drop across each resistor in the circuit described in question 17?
Last Answer : E1 = 80 volts. E2 = 240 volts. E3 = 320 volts
Description : What is the voltage drop across the resistor in an RC charging circuit when the charge on the capacitor is equal to the battery voltage?
Last Answer : Zero.
Description : At what instant does the greatest voltage appear across the resistor in a series RC circuit when the capacitor is charging?
Last Answer : At the instant of the initiation of the action.
Description : An ammeter has a full-scale deflection current of 100mA. If the same ammeter is used to measure a full-scale current of 1.0ampere, what is the value of the shunt resistor in ohms if the voltage across the meter is 9.0 volts?
Last Answer : 10 ohms
Description : An LED is operated on a 12 volt automobile circuit. The voltage drop across the LED is 2 volts and the current must be limited to 50 milliamps to prevent its overheating and destruction. What size resistor must be used? w) 60 ohms x) 100 ohms y) 120 ohms z) 200 ohms
Last Answer : ANSWER: Z -- 200 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 : Four amperes of current are measured through a 24 ohms resistor connected across a voltage source. How much voltage does the source produce? A.960 V B.9.6 V C.96 V D.8 V
Last Answer : Four amperes of current are measured through a 24 ohms resistor connected across a voltage source. How much voltage does the source produce? A.960 V B.9.6 V C.96 V D.8 V
Description : The voltage induced across a certain coil is 200 mV. A 1200 resistor is connected to the coil terminals. The induced current will be: A. 1.7 mA B. 16 mA C. 12 mA D. 120 mA
Last Answer : The voltage induced across a certain coil is 200 mV. A 1200 resistor is connected to the coil terminals. The induced current will be: 1.7 mA
Description : To determine the polarity of the voltage drop across a resistor, it is necessary to know?
Last Answer : To determine the polarity of the voltage drop across a resistor, it is necessary to know direction of current through the resistor.
Description : The third color band on a resistor is used to indicate the ______________. A. tolerance of the resistor B. number of zeros following the first two significant figures in the resistance value C. first significant figure of the resistance D. second significant figure of the resistance
Description : Tolerance value of Gold of colour coded resistors is _______. A. 10% B. 5% C. 2% D. 20%
Last Answer : Tolerance value of Gold of colour coded resistors is 5%.
Description : In the circuit shown in Fig. 4.63, the terminal voltage of the battery is 6.0 V. Find the current I through the `18 Omega` resistor.
Last Answer : In the circuit shown in Fig. 4.63, the terminal voltage of the battery is 6.0 V. Find the current I through the `18 Omega` resistor.
Description : If the load in question 50 requires a voltage of +90 V, what should be the value of the bleeder resistor?
Last Answer : 2 kΩ