**Electrical Electronics Engineering Job Interview MCQ Questions Answers 4**

**1.**An electric heater is marked 2000 W,200 V. The resistance of the coil is

**20 ohm**.

**2.**The current in a circuit having constant resistance is tripled. The power increases

**9 times.**

**3.**What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ohms?

**Ans: 200 V**

**4.**In the case of liquids, ohms law is

**fully obeyed.**

**5.**A copper wire has a resistance of 10 ohms. It is stretched by one-tenth of its original length. Then its resistance will be -

**12.1 ohms**.

**6.**No current flows between two charged bodies if they have same

**potentials.**

**7.**Best materials for making connecting wires

**- copper**

**8.**The specific resistance of the material of wire depends

**on the**

**material****out of which the**

**wire****is made.**

**9.**Ampere- second is the unit

**of Charge.**

**10.**The percentage by which the incandescence of lamp decreases due to drop of current by 3% is

**-6%.**