The instrument which is used to display the magnitude of changing electric current is called:
Evacuated tube
Cathode rays oscilloscope
Television tube
Picture tube
The value of acceleration is simple harmonic motion at mean position is:
Maximum
Zero
10 N
Both a and b
The unit of spring constant is:
Nm2
Nm-1
NOT gate is also called:
Converter
Inverter
Transmitter
Receiver
The value of K in SI unit is:
9X1020 Nm2C2
8X109Nm2C2
9X109Nm2C2
10X10-9 Nm2C-2