The pure piece of metal which is used to be plated, is made the
A. anode
B. cathode
C. nematode
D. posit rode
Related Questions on Chapter 6: Electrical Circuits & Electric Currents - Science Mcqs for Grade 7
To make the coil keep rotating, the current is reversed after every half turn by a device called
A. brush
B. commutator
C. mutator
D. carbon spring
The charge flowing in the wire when we turn the light on, is
A. positive ions
B. negative ions
C. electrons
D. protons
Miniature circuit breaker is a small
A. fuse
B. magnetic switch
C. electromagnetic switch
D. two way switch
A. positively charged ions
B. negatively charged ions
C. electrons
D. protons