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Recent questions tagged emf


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The potential drop between the terminals of a battery is equal to the battery's EMF when:
1 answer 36 views
The potential drop between the terminals of a battery is equal to the battery's EMF when:The potential drop between the terminals of a battery is equal to the battery's EMF when: w) no current is drawn from the battery x) a very large cu ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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An alternating current can induce voltage because it has
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An alternating current can induce voltage because it hasAn alternating current can induce voltage because it has A) ripple value B) varying magnetic field C) weaker magnetic field than direct current D) hi ...
by MathsGee Platinum
(103,772 points)
asked in Physics Sep 12, 2021
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How many turns of wire must a coil have in order to induce a voltage of 10.5 volts when exposed to a changing magnetic flux with a rate of 0.0075 Wb/s?
1 answer 120 views
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The magnetic flux through a coil containing 50 loops changes from 30 Wb to –30 Wb in 0.42 seconds. What is the voltage induced in the coil?

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what is e.m.f and terminal voltage of a cell?how are they related to internal resistance?
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what is e.m.f and terminal voltage of a cell?how are they related to internal resistance?what is e.m.f and terminal voltage of a cell?how are they related to internal resistance? ...
by Student SIlver Status
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asked in Physics Sep 5, 2020
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State Faraday's law in words.
1 answer 290 views
State Faraday's law in words.State Faraday's law in words. ...
by Joshua Mwanza Diamond
(46,418 points)
asked in Physics Apr 26, 2020
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A circular coil is placed inside a magnetic field and rotated clockwise to induce an emf. Which ONE of the following changes will increase the induced emf?
1 answer 556 views
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Explain in words, the meaning of an emf of 12 V.
2 answers 1K views
Explain in words, the meaning of an emf of 12 V. Explain in words, the meaning of an emf of 12 V. ...
by MathsGee Platinum
(103,772 points)
asked in Physics Oct 14, 2019
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Define the EMF of a battery?
2 answers 1.2K views
Define the EMF of a battery?Define the EMF of a battery? ...
by MathsGee Platinum
(103,772 points)
asked in Physics Sep 1, 2019
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