Question

11.Electric potential is
(A) A scalar quantity
(B) a vector quantity
(C) neither scalar nor vector (D) sometimes scalar and sometimes vector
12.The variable resistance is called :-
(A) resistor
(B) rheostat (C) open switch (D) none of these
13.How much work is done in moving a charge of two coulombs from a point at
118 volts to a point at 128 volts?
(A) 10)
(B) 20)
(C) to
(D) None of these
14.If a glass rod is rubbed with silk, it acquires a positive charge because-
(A) Protons are added to it
(C) Electrons are added to it
(B) Protons are removed from it (D) Electrons are removed from it
15.In a conductor 4 coulombs of charge flows for 2 seconds. The value of electric current
will be-
(A) 4V
(B) 4A
(C) 2A
(D) 2v

Answer 1

Answer:

11 scaler quantity

12 Rheostat

Answer 2

Answer:

Explanation:

GIVEN CHARGE=4COULOUMB

TIME TAKEN TO FLOW=2 SECOND

THE VALUE OF CURRENT  

I=C/T

I=4 couloumb

2 second

I=2 ampere

Explanation:

hey the answers are

The electric potential V is a scalar and has no direction,

The variable resistance is called rheostat

If a glass rod is rubbed with silk, it acquires a positive charge because-

the glass rod losses electrons, it becomes rich in positive charge.