(B)ELEMENT 3-9 OHM'S LAW

Question 1

What value of series resistor would be needed would be needed to obtain a full scale deflection on a 50 microamp DC meter with an applied voltage of 200 volts DC?

Answer 1

4 megaohms

Question 2

Which of the following Ohms law is incorrect?

Answer 2

I=R/E

Question 3

If a current of 2 amps flows through a 50 ohm resistor, what is the voltage across the resistor?

Answer 3

100 volts

Question 4

If a 100 ohm resistor is connected across 200 volts, what is the current through the resistor?

Answer 4

2 amps

Question 5

If a current of 3 amps flows through a resistor conencted to 90 volts, what is the resistance?

Answer 5

30 Ohms

Question 6

A relay coil has 500 ohm resistance, operates on 125 mA, what value of resistance should be connected in series with it to opereate from a 110 v Dc?

Answer 6

380 ohms