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41
The electric field at a point situated at a distance d from straight charged conductor is
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Answer: Option B
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42
capacitors are used for audio frequency and radio frequency coupling and tuning.
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Answer: Option B
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43
. . . . . . . . at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
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Answer: Option A
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44
When a dielectric is placed in an electric field the field strength
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Answer: Option A
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45
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be
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Answer: Option B
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46
Which of the following materials has the highest value of dielectric constant?
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Answer: Option C
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47
at a point is equal to the negative potential gradient at that point.
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Answer: Option A
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48
The sparking between two electrical contacts can be reduced by inserting a
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Answer: Option A
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49
The units of volume charge density are
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Answer: Option C
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50
What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?
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Answer: Option C
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