Question

1 . What is Ohm' s law ? How can it be verified ?

2. What is the (1) maximum (2) minimum resistance that can be secured by combination of four coils of resistances 4 ohm , 8 ohm , 12 ohm and 24 ohm ?


​

Answer 1

Answer:

1. Ohm's law is a formula used to calculate the relationship between voltage, current and resistance in a electric circuit.

To verify ohm's law we need to measure voltage across the test resistance RT and current passing through it.

2. maximum resistance Rs = R1+R2+R3+R4

= 4+8+12+24

=48ohm

minimum resistance Rp= 1/R1+ 1/R2+1/R3+1/R4

=1/2 ohm.