HARD
Diploma
IMPORTANT
Earn 100

If a current of 10 Aflows through a heater. how much charge passes through the heater in 1 h?

 How many electrons this charge correspond to?

Important Questions on Electricity and Magnetism

MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 14
A conducting sphere of the radius 15.0 cmhas a positive charge of 4.0 μC deposited on its surface. Calculate the magnitude of the electric field produced by the charge at distance from the centre of the sphere of 0.0 cm
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 14
A conducting sphere of the radius 15.0 cmhas a positive charge of 4.0 μC deposited on its surface. Calculate the magnitude of the electric field produced by the charge at distance from the centre of the sphere of 5.0 cm
HARD
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 14
A conducting sphere of the radius 15.0 cmhas a positive charge of 4.0 μC deposited on its surface. Calculate the magnitude of the electric field produced by the charge at distance from the centre of the sphere of 15.0 cm
HARD
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 14
A conducting sphere of the radius 15.0 cmhas a positive charge of 4.0 μC deposited on its surface. Calculate the magnitude of the electric field produced by the charge at distance from the centre of the sphere of 20.0 cm
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 15
Outline the mechanism by which electric current heats up the material.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 16
Explain why the doubling of the length of a wire at a constant temperature, will double its resistance?
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 17

The graph shows the current as a function of voltage across the same piece of metal wire which is kept at two different temperature.

Discuss whether the wire obey Ohm's law.

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HARD
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 5 - Electricity and Magnetism>Test yourself>Q 17

The graph shows the current as a function of the voltage across the same piece of metal wire which is kept at two different temperatures.

Suggest which of the two lines on the graph corresponds to the higher temperature.

 

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