In the circuits shown below the ammeter Areads 4 amp. and the voltmeter V reads 20 volts. The value of the resistance R is

In the circuits shown below the ammeter Areads 4 amp. and the voltmete

1.	In the circuits shown below the ammeter Areads 4 amp. and the voltmeter V reads 20 volts. The value of the resistance R is
A.	slightly more than 5 ohms
B.	slightly less than 5 ohms
C.	exactly 5 ohms
D.	None of these
Answer» B. slightly less than 5 ohms