NEET Physics Electricity MCQs Set C

Question. Two charges are placed at a distance. If a glass slab is placed between them, force between them will be

Answer: C

Question. The reciprocal of resistance is conductance.
If the unit of resistance is ohm, the unit of conductance will be -
(A) ohm
(B) volt
(C) mho
(D) ohm metre^–1
Answer: C

Question. When the distance between the charged particles is halved, the force between them becomes -
(A) One-fourth
(B) Half
(C) Double
(D) Four times
Answer: D

Question. Two charges are placed at a distance apart.
If a glass slab is placed between them then force between them will -
(A) be zero
(B) increase
(C) decrease
(D) remain the same
Answer: C

Question. When the distance between two charged particles is halved, the force between them becomes:
(A) one-half
(B) double
(C) one-fourth
(D) four times.
Answer: C

Question. Charge on an electron is 1.6×10^–19 coulomb. Number of electrons passing through the wire per second on flowing of 1 ampere current through the wire will be
(A) 0.625×10^–19
(B) 1.6×10^–19
(C) 1.6×10^–19
(D) 0.625×10¹⁹
Answer: D

Question. Two wires of the same material having lengths in the ratio of 1 : 2 and diameters in the ratio 2 : 1 are connected with a cell of 6 volt and internal resistance 1Ω . The ratio of the potential difference across the two wires will be
(A) 1 : 2
(B) 2 : 1
(C) 1 : 8
(D) 8 : 1
Answer: C

Question. The value of current i in the given circuit is

(A) zero
(B) 5 amp.
(C) 7 amp.
(D) 11 amp.
Answer: D

Question. A wire of resistance 12 ohms is bent in the form of a circular ring. The effective resistance between the two points on any diameter of the circle is
(A) 24 ohm
(B) 12 ohm
(C) 6ohm
(D) 3 ohm
Answer: D

Question. In the circuit shown the ammeter A reads 4 amp. and the voltmeter V reads 20 volts. The value of the resistance R is

(A) slightly more than 5 ohms
(B) slightly less than 5 ohms
(C) Exact 5 ohms
(D) None of the above
Answer: A

Question. What is the potential difference across the source ?

(A) 440 V 
(B) 220 V
(C) 120V
(D) 60V
Answer: C