Resistance Inductance and Capcitance To resistances of 5

� To resistances of 5 Ohm and 20 Ohm are connected in parallel. The

� A. B. C. D. Two resistances each of 10 Ohm and 20 Ohm

Find the equivalent resistance between point A and B in following combination of resistors

� The time constant of a circuit containing, resistance of R Ohms in series

� Given n capacitors with charge Q and capacitance C, will you get the

�A 320 H coil is in series with a 3. 3 k resistor. How

Calculate the unkown value R of the resistors in the following circuit A. 8

�A switch, a 220 resistor, and a 60 m. H inductor are in series

� Three capacitors of C microfarad are connected first in series and then in

In the given circuit shown, the resistances are 2 ohms, 12 ohms and 24

� What happens to total resistance in a circuit with parallel resistors if one

� In a 20 V RC circuit, if 20 V is measured across the

� Statement 1 : Inductor doesn’t accept sudden changes in current. � Statement 2

� The unit of inductor is Henry. It can also be represented as :

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Resistance, Inductance and Capcitance

� To resistances of 5 Ohm and 20 Ohm are connected in parallel. The parallel combination is connect in series with 1 ohm resistance and series-parallel combination is connected across a dc source of 100 V. The current supplied by the source is A. 25 A B. 20 A C. 5 A D. 4 A

Ans : B

� A. B. C. D. Two resistances each of 10 Ohm and 20 Ohm are connected in parallel across a dc voltage source. The current through the 10 Ohm resistance is Equal to current supplied by the voltage source. Equal to the current through the 20 Ohm resistance. 50% of the current through the 20 Ohm resistance 200% of the current through the 20 Ohm resistance.

Ans : D

Find the equivalent resistance between point A and B in following combination of resistors having resistance R, respectively a. 3/5 R b. 2 R c. 8/5 R d. 5 R/8

Ans : C

� The time constant of a circuit containing, resistance of R Ohms in series with an inductance of L henry is equal to A. R*L B. R/L C. L/R D. L+R

Ans : C

� Given n capacitors with charge Q and capacitance C, will you get the greatest energy stored : A. In series C. In parallel B. They will be the same D. None

Ans : B

�A 320 H coil is in series with a 3. 3 k resistor. How long does it take for current to build up to its full value? A. 5. 28 s B. 5. 28 ms C. 5. 28 ms D. 0. 528 s

Ans : A

Calculate the unkown value R of the resistors in the following circuit A. 8 Ohm B. 6 Ohm C. 12 Ohm D. 3 Ohm

Ans : B

�A switch, a 220 resistor, and a 60 m. H inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed? A. 91 m. A B. 78 m. A C. 57 m. A D. 400 m. A

Ans : B

� Three capacitors of C microfarad are connected first in series and then in parallel, the equivalent capacitance is A. greater in series combination. B. greater in parallel combination. C. Same in the two combinations. D. None of these

Ans : B

In the given circuit shown, the resistances are 2 ohms, 12 ohms and 24 ohms respectively, calculate the power consumed in 2 ohms resistor A. 2. 88 W B. 7. 68 W C. 3. 84 W D. 2. 4 W

Ans : A

� What happens to total resistance in a circuit with parallel resistors if one of them opens? A. It increases B. It halves C. It remains the same D. It decreases

Ans : A

� In a 20 V RC circuit, if 20 V is measured across the resistor and 40 V across the capacitor, the applied voltage is A. 50 V B. 55 V C. 60 V D. 45 V

Ans : D

� Statement 1 : Inductor doesn’t accept sudden changes in current. � Statement 2 : Inductor doesn’t accept sudden changes in voltage. A. Statement 2 is correct B. Statement 1 is correct C. Both are correct D. None of the above

Ans : B

� The unit of inductor is Henry. It can also be represented as : A. V/sec B. V-Sec C. V/A D. V-Sec/A

Ans : D