46. When an AC source is connected across a resistor

1. 1. The current leads the voltage in phase

   
   
   

   2. The current legs behind the voltage in phase

   
   
   

   3. The current and voltage are in same phase

   
   
   

   4. None of the above

   
   
   

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   N/A

   Correct Option: C

   N/A

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47. Alternating current can be measured by

1. 1. Moving coil galvanometer

   
   
   

   2. Hot wire ammeter

   
   
   

   3. Tangent galvanometer

   
   
   

   4. None of the above

   
   
   

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   N/A

   Correct Option: B

   N/A

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48. The intensity of a magnetic field is defined as the force experienced by a

1. 1. Standard compass

   
   
   

   2. Unit positive charge

   
   
   

   3. Unit negative charge

   
   
   

   4. Unit north pole

   
   
   

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   N/A

   Correct Option: D

   N/A

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49. Which one of the following is not made of soft iron?

1. 1. Electromagnet

   
   
   

   2. Core of transformer

   
   
   

   3. Core of dynamo

   
   
   

   4. Magnet of loudspeaker

   
   
   

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   N/A

   Correct Option: D

   N/A

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50. Time period in a vibration magnetometer will be infinite

1. 1. At magnetic equator

   
   
   

   2. At geographic equator

   
   
   

   3. At magnetic pole

   
   
   

   4. No where

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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