Electricity Test

Result

Electricity Test - 1

Score
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Rank
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TIME Taken - -

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Question 1
1 / -0

If the resistance of a conductor in a given circuit is increased, then the current will

A
increase

B
decrease

C
remain the same

D
first increase and then decrease

Solution

We know V = IR, where V is the voltage, I is the current and R is the resistance.
I is inversely proportional to R, as electric potential is constant. So, if the resistance of a conductor is increased, the current will decrease.
Question 2
1 / -0

When a body is negatively charged by friction, it means the body has

A
lost some electrons

B
lost some protons

C
acquired excess of electrons

D
acquired excess of protons

Solution

Whenever two different materials rub against each other, it is likely that one will leave with more electrons than it started with. Electrons are negatively charged; so when a body is negatively charged by friction, it means the body has acquired excess of electrons.