With mutual induction,to induce voltage in the secondary coil,there must be:
A) a physical connection between the two coils of wire
B) alternating current in the primary coil of wire
C) direct current in the primary coil of wire
D) A and B
Correct Answer:
Verified
Q64: A device that converts electrical energy to
Q66: The idea that electricity could be induced
Q66: An electromagnet includes:
A)a coil of wire
B)an iron
Q67: A step-up transformer results in:
A) increased current
B)
Q70: Closed-core and shell-type transformers:
A) are seldom used
Q76: Reducing the number of coils in the
Q76: With self-induction,the secondary current:
A) is in a
Q77: Self-induction is based on the concepts introduced
Q80: Increasing the strength of the magnetic field
Q93: The autotransformer
A) uses self-induction
B) uses two coils
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