3-B-009: Ohm's Law-1
3-9B1:
What value of series resistor would be needed to obtain a full scale deflection on a 50 microamp DC meter with an applied voltage of 200 volts DC?
4 megohms.
2 megohms.
400 kilohms.
200 kilohms.
3-9B2:
Which of the following Ohms Law formulas is incorrect?
I = R / E
I = E / R
E = I x R
R = E / I
3-9B3:
If a current of 2 amperes flows through a 50-ohm resistor, what is the voltage across the resistor?
100 volts.
25 volts.
52 volts.
200 volts.
3-9B4:
If a 100-ohm resistor is connected across 200 volts, what is the current through the resistor?
2 amperes.
1 ampere.
300 amperes.
20,000 amperes.
3-9B5:
If a current of 3 amperes flows through a resistor connected to 90 volts, what is the resistance?
30 ohms.
3 ohms.
93 ohms.
270 ohms.
3-9B6:
A relay coil has 500 ohms resistance, and operates on 125 mA. What value of resistance should be connected in series with it to operate from 110 V DC?
380 ohms.
150 ohms.
220 ohms.
470 ohms.
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