Physics Class 10th

141. For a positive point charge, the lines radiate radically:

A) Inwards

B) Outwards

C) Both A and B

D) None of the above

142. For a negative point charge, the lines converge radically:

A) Inwards

B) Outwards

C) Both A and B

D) None of the above.

143. Map that gives the direction and strength of the field at various places.

A) Electric Force Intensity

B) Electric Field Lines

C) Field force.

D) None of the above.

144. A positive test charge of 30µC is placed in an electric field. Force on it is 0.600 N. What is the magnitude of the electric field at the location of test charge?

A) 2×10^4NC^-1

B) 2×10^8NC^-1

C) 3.83×10^8NC^-1

D) None of the above.

145. The electric potential energy ‘U’ per unit charge ‘q’ in an electric field is called:

A) Electric Intensity

B) Electric Potential

C) Electric Charge

D) None of the above.

146. Joules per coulomb can also be written as:

A) Watt W

B) Volts V

C) Amperes A

D) Omegas

147. When one joules of work is done to move a positive charge of one coulomb from a point of Zero Potential. The Potential of point shall be:

A) Zero

B) One

C) Two

D) None of the above

148. Electric field Is:

A) Force unit per charge

B) Energy per charge

C) Both A and B

D) None

149. Electrical potential can also be defined as:

A) Force unit per charge

B) Energy per charge

C) Both A and B

D) None of the above

150. Electrical potential is a _______ quantity.

A) Vector

B) Scalar

C) None

151. V = X/q here X is:

A) Work

B) Velocity

C) Mass

D) Acceleration

152. A test positive charge is brought closer to an isolated positive charge +q. The work done by external agent is:

A) Positive

B) Negative

C) No work shall be done

153. How much work must be done to increase the potential of a charge 2.5x10^-7 C by 100V

A) 4 x 10^ 5 J

B) 2.5 x 10^-5J

C) 2.5 x 10^-5J

D) none of the above.

154. ______ Phenomena can be used to separate dust from smoke particles.

A) Mutual Induction

B) Electrostatic Induction

C) Electrostatics

D) None of the above.

155. Process of separating dust from smoke in chimneys before releasing it.

A) Electrostatic Induction

B) Electrostatic Separation

C) Electrostatic Perception

D) None of the above.

156. In Electrostatic Perception Chimneys grids are charged ______.

A) Negative

B) Positive

C) No Charge

D) The charge present does not matter.

157. Which of the following is not an application of Electrostatics?

A) Electroplating

B) Electrostatic Perception

C) Electro Painting

D) Non of the above.

158. Electro Painting is used for:

A) to reduce uneven coating of paint

B) to reduce paint usage

C) Both A and B

D) none of the above.

159. Capacitor is a device used for:

A) Generate Charges

B) Store Charges

C) Reduce Charges

D) None of the above.

160. Capacitor consists of ______ conductors.

A) One

B) Two

C) Four

D) Five