Physics Class 10th
181. If the distance between two charged particles is halved, the Coulomb force between the two charged particles becomes:
A) Half
B) One Quarter
C) Double
D) Four times
182. The value of one coulomb constant k, depends on:
A) Value of charges
B) Material Medium
C) Separation between the charges
D) All of the these.
183. The unit of electric potential is:
A) Farad
B) Coulomb
C) Volt
D) NC^-1
184. A capacitor C has charge Q. the actual charges on its plates are:
A) Q1,Q
B) Q,0
C) Q1, -Q
D) Q/2 , -Q/2
185. – Capacitor is used in which of the following:
A) Tuning Transmitter
B) Radio transmitter
C) Receiver
D) All of the above.
186. Positive charge:
A) Attract positive charge
B) Repels Positive Charge
C) Attracts neutral charge
D) repels neutral charge.
187. An object attains excess negative charge after being rubbed against another object. Which is:
A) Neutral
B) Negatively charged
C) Charged
D) all of the above.
188. When you rub s plastic rod against your hair several times and put it near some bits of paper, the pieces of paper are attracted towards it. What does this mean:
A) The rod and paper are oppositely charged
B) The rod acquires a positive charge
C) The rod and paper have similar charges
D) The rod has negative charge
189. According to coulomb law, what happens to the attraction of two oppositely charged objects as their distance of separation increases.
A) Increases
B) Decreases
C) Remains unchanged
D) cannot be determined
190. The Coulomb law is applicable for charges that are:
A) Moving and Point charges
B) Moving and non point charges
C) Stationary and point charges
D) Stationary and large charges
191. Five Joules of work is needed to move 10 C charge from one plate to another. The potential difference is
A) 0.5 V
B) 2V
C) 5 V
D) 10 V
192. Two charges are separated by 2mm. Which of the following shall produce the greatest attractive forces?
A) 1q and 4q
B)-1q and -4q
C) 2q and 2 q
D) 2q and -2q
193. Electric field lines:
A) always cross each other
B) never cross each other
C) cross each other in the strong region
D) Cross each other the weakest region
194. Capacitance is defined as:
A) VC
B) Q/V
C) QV
D) V/Q
195. The SI unit of Charge is:
A) Joule
B) Volt
C) Coulomb
D) Watt
196. Volt is named after
A) Faraday
B) Volta
C) Newton
D) Coulomb
197. Volta was a ________ scientist
A) French
B) Italian
C) American
D) Dutch
198. The region around a magnet where magnetic effects can be observed:
A) Electric field
B) Magnetic Field
C) Both A and B
D) None of the above
199. When charges move in conductor they generate:
A) Heat
B) Electric Field
C) Magnetic Field
D) Electromagnetic Field
200. When charges are at rest they produce:
A) Heat
B) Electric Field
C) Magnetic Field
D) None of the above.