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- 1. Multiple Choice
When a conductor is moved to cut through the magnetic flux, an _______________ is produced.
induced current
electromotive force
electromagnetic induction
internal resistance
- 2. Multiple Choice
The production of electric current by a changing magnetic field is called ____________________________________.
induced current
electromotive force
electromagnetic induction
internal resistance
- 3. Multiple Choice
___________________rule can be used to determine the direction of the ___________ induced current produced.
Fleming's Left Hand Rule
Fleming's Right Hand Rule
Right Hand Grip Rule
- 4. Multiple Choice
In Fleming's Right Hand Rule, First finger and center finger represent
current, magnetic field
magnetic field, current
force, current
magnetic field, force
- 5. Multiple Choice
____________law states that the direction of the induced current is such that it always _______ ___ the change producing it.
Lenz's Law, oppose
Faraday's Law, oppose
Lez's Law, follow
Faraday's Law, follow
- 6. Multiple Choice
Faraday’s Law states that the magnitude of the induced e.m.f. is _________________ to the rate of change of magnetic flux linkage with the solenoid.
equal
inversely proportional
directly proportional
- 7. Multiple Choice
The d.c generator and a.c generator make use of electromagnetic induction to produce _______________________
force
electricity
energy
power
- 8. Multiple Choice
Which device uses slip rings?
a cathode-ray tube
a d.c. generator
an a.c. generator
a solenoid
- 9. Multiple Choice
Which of the following increases frequency of AC?
increasing number of turns on the coil
using a stronger magnet
rotating the coil faster
increase area of the coil
- 10. Multiple Choice
No EMF is induced when?
When the wire is not moving
When the wire is parallel to magnetic field direction
When no lines are cut by the wire
all of the above
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