Swiping a credit card is based on the principle of ______.A. Electroma – McqOptions

MCQOPTIONS

1.	Swiping a credit card is based on the principle of ______.A. Electromagnetic inductionB. Frictional forceC. Photoelectric effectD. Dynamic technology
A.	A
B.	C
C.	D
D.	B
Answer» B. C

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