Electricity Test

Result

Electricity Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

The process of acquiring temporary electrification under the influence of a charged body is called

A
attraction

B
induction

C
repulsion

D
conduction

Solution

The process of acquiring temporary electrification under the influence of a charged body is called induction.In Induction , the positive and the negative charge of the body gets separated under the influence of the another charged body.
Question 2
1 / -0

Ohm's law gives a relation between

A
resistance of a conductor and its inductance

B
capacity of a conductor and its charge

C
the current flowing through a circuit and the potential difference across it

D
None of these

Solution

Ohm's law gives a relation between the current flowing through a circuit and the potential difference across it.
Question 3
1 / -0

A geyser of 2.5 kW is connected to a battery of 220 volts. An iron of 1.5 kW is also connected to the battery. To prevent any failure of fuse, the fuse wire must have a current rating of

A
15 A

B
7 A

C
20 A

D
6 A

Solution

We know: P = VI
For geyser, Current I₁ = 2500/220

For iron, I₂ = 1500/220
I₂ = 6.8 A

Total current = I₁ + I₂ = 18.16 A
So, the fuse wire must be of a rating more than 18.16 A.

From all the options given, 20 A is the only rating more than 18.16 A. Hence, it is the answer.