Electrostatic Potential
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PHXII02:ELECTROSTATIC POTENTIAL AND CAPACITANCE

359450 The top of the atmosphere is at about 400 \(kV\) with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about \(100\,V{m^{ - 1}}\). Still, we do not get an electric shock as we step out of our house into the open house because (assume the house to be a steel cage so that there is no field inside)

1 There is a potential difference between our body and the ground
2 100 \(V\)/\(m\) is not a high electric field so that we do not feel the shock
3 Our body and the ground forms an equipotential surface
4 The atmosphere is not a conductor.
KCET - 2006
PHXII02:ELECTROSTATIC POTENTIAL AND CAPACITANCE

359451 Assertion :
An electric field is preferred in comparison to magnetic field for detecting the electron beam in a television picture tube.
Reason :
Electric field requires low voltage.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
NEET DIGITAL LIBRARY
PHXII02:ELECTROSTATIC POTENTIAL AND CAPACITANCE

359450 The top of the atmosphere is at about 400 \(kV\) with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about \(100\,V{m^{ - 1}}\). Still, we do not get an electric shock as we step out of our house into the open house because (assume the house to be a steel cage so that there is no field inside)

1 There is a potential difference between our body and the ground
2 100 \(V\)/\(m\) is not a high electric field so that we do not feel the shock
3 Our body and the ground forms an equipotential surface
4 The atmosphere is not a conductor.
KCET - 2006
PHXII02:ELECTROSTATIC POTENTIAL AND CAPACITANCE

359451 Assertion :
An electric field is preferred in comparison to magnetic field for detecting the electron beam in a television picture tube.
Reason :
Electric field requires low voltage.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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