## Which of the following terms does not represent electrical power in a circuit?

Q.2:- Which of the following terms does not represent electrical power in a circuit? (a) I2R (b) IR2 (c) VI (d) V2/R   Answer:- (b) Power cannot be represented by IR2.

## An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.

Q. An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.   Answers:- Given that electric…

## What determines the rate at which energy is delivered by a current?

Q. What determines the rate at which energy is delivered by a current?   Answers:- The rate at which energy is delivered by a current is the power of the…

## An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.

Q. An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.   Answer:- Given that Resistance(R) = 20 Ω, Electric…

## Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.

Q. Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.   Answer:- Given Charge (Q) =96000C Time (t)=1hr=60×60=3600s Potential difference…

## Why does the cord of an electric heater not glow while the heating element does?

Q. Why does the cord of an electric heater not glow while the heating element does?   Answer:- The heating element of the heater is made up of alloy which…

## What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance

Q. What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance   Answer:- Given resistances R1 =4 Ω, R2=8 Ω, R3=12Ω, and R4=24Ω. (a)…

## How can three resistors of resistances 2 Ω, 3 Ω and 6 Ω be connected to give a total resistance of (a) 4 Ω, (b) 1 Ω?

Q. How can three resistors of resistances 2 Ω, 3 Ω and 6 Ω be connected to give a total resistance of (a) 4 Ω, (b) 1 Ω?   Answer:-…