Hi friends, these are some of the multiple choice questions on electrical and magnetic properties. These are some of the basic questions which are asked in previous competitive papers check out and comment...
l) Electric field intensity at a point is numerically equal to at that point.
A) potential gradient
B) potential difference
C) dielectric constant
D) the force
Ans:D
2) Three charges of +5 C, -6 C and +9 C are placed inside a sphere. What is the total flux passing through the surface of sphere?
A) 8 C
B) 14 C
C) 20 C
D) -6 C
Ans:A
3) The potential at a point due to a charge is 15 V. If the distance is increased three times, the potential at the point will be
A) 5 V
B) 18 V
C) 45 V
D) 15 V
Ans:A
4) Electric potential is a quantity.
A) Scalar
B) phasor
C) vector
D) variable
Ans:A
5) The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium of relative permittivity of 3, then electric potential at that point will be
A) 63 V
B) 21 V
C) 7 V
D) 42 V
Ans:C
6) The electric potential across part AB of a circuit is 5 V; p oint A b eing at higher potential. If a charge of 5 C moves from A to B, then energy released as
A) 5 joules
B) 25 joules
C) 10 joules
D) 100 joules
Ans:B
7) What is the other name for dielectric strength?
A) Breakdown voltage
B) Electric intensity
C) Potential gradient
D) Dielectric constant
Ans:A
8) Which of the following materials has the highest dielectric strength?
A) Glass
B) Oiled paper
C) Mica
D) Air
Ans:A
9) What is used as the insulating material or dielectric in an electric ion?
A) Oiled paper
B) Mica
C) Paraffin
D) Titanate compound
Ans:B
10) What is used as the dielectric material in high voltage transformers?
A) Mica
B) Paraffin
C) Porcelain
D) Oiled paper
Ans:C
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l) Electric field intensity at a point is numerically equal to at that point.
A) potential gradient
B) potential difference
C) dielectric constant
D) the force
Ans:D
2) Three charges of +5 C, -6 C and +9 C are placed inside a sphere. What is the total flux passing through the surface of sphere?
A) 8 C
B) 14 C
C) 20 C
D) -6 C
Ans:A
3) The potential at a point due to a charge is 15 V. If the distance is increased three times, the potential at the point will be
A) 5 V
B) 18 V
C) 45 V
D) 15 V
Ans:A
4) Electric potential is a quantity.
A) Scalar
B) phasor
C) vector
D) variable
Ans:A
5) The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium of relative permittivity of 3, then electric potential at that point will be
A) 63 V
B) 21 V
C) 7 V
D) 42 V
Ans:C
6) The electric potential across part AB of a circuit is 5 V; p oint A b eing at higher potential. If a charge of 5 C moves from A to B, then energy released as
A) 5 joules
B) 25 joules
C) 10 joules
D) 100 joules
Ans:B
7) What is the other name for dielectric strength?
A) Breakdown voltage
B) Electric intensity
C) Potential gradient
D) Dielectric constant
Ans:A
8) Which of the following materials has the highest dielectric strength?
A) Glass
B) Oiled paper
C) Mica
D) Air
Ans:A
9) What is used as the insulating material or dielectric in an electric ion?
A) Oiled paper
B) Mica
C) Paraffin
D) Titanate compound
Ans:B
10) What is used as the dielectric material in high voltage transformers?
A) Mica
B) Paraffin
C) Porcelain
D) Oiled paper
Ans:C
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
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