1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) In a region of constant potential, the electric field is zero and there can be no charge inside the region.

Reason (R) According to Gauss law, charge inside the region should be zero if electric field is zero.

A
Both A and R are true; R is correct explanation of A.
B
Both A and R are true; R is not correct explanation of A.
C
A is true, R is false.
D
A is false, R is true.
2
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Statement (A) Inside a charged hollow metal sphere, $$E=0, V \neq 0$$, (where, $$E=$$ electric field, $$V=$$ electric potential).

Statement (B) The work done in moving a positive charge on an equipotential surface is zero.

Statement (C) When two like charges are brought closer, their mutual electrostatic potential energy will increase.

A
A, B, C are true
B
A, B are true, C is false
C
A, C are true, B is false
D
B, C are true, A is false
3
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The electrons take $$40 \times 10^3$$ s to dirift from one end of a metal wire of length 2 m to its other end. The area of cross-section of the wire is $$4 \mathrm{~mm}^2$$ and it is carrying a current of 1.6 A. The number density of free electrons in the metal wire is

A
$$8 \times 10^{28} \mathrm{~m}^{-3}$$
B
$$6 \times 10^{28} \mathrm{~m}^{-3}$$
C
$$4 \times 10^{28} \mathrm{~m}^{-3}$$
D
$$5 \times 10^{28} \mathrm{~m}^{-3}$$
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The current 'I' in the circuit shown in the figure is

AP EAPCET 2022 - 4th July Evening Shift Physics - Current Electricity Question 3 English

A
$$\varepsilon/R$$
B
$$-\varepsilon/R$$
C
$$2\varepsilon/R$$
D
$$-2\varepsilon/R$$
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