1..How is voltage related to resistance 2.Can current across a circuit remain constant 3.What will be the supply voltage if three resistors of 4ohms each are connected in series in a circuit carrying 4A of current

1. The voltage and resistance relation is given by the ohm’s law

Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Ohm’s law can de depicted in formula as

V ∝ I

Therefore, V = RI where R is a constant called resistance. R depends on the dimensions of the conductor and also on the material of the conductor. Its SI unit is Ohm (Ω).

2. The current can remain constant in a circuit if the circuit is connected in series. The amount of current in a series circuit is the same through any component in the circuit. This is because there is only one path for current flow in a series circuit.

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