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## Homework Statement

State the magnitude of the terminal potential difference between two supply terminals which are connected to a piece of lead with negligible resistance. The EMF of the circuit is 5000V with internal resistance of 2,000,000 Ohms.

I don't really understand what "magnitude" means and it feels like I'm lacking information.

## Homework Equations

I = V/R

V = EMF - Ir

r = 2,000,000 (as it's internal)

EMF = 5000V (given in question)

R = 2,000,000 (no load resistance, just internal)

## The Attempt at a Solution

I = V/R = 5000/2000000 = 0.0025 A

Therefore: V = 5000 - (0.0025 X 2000000) = 0

I have no idea if I'm right or not or what this answer is actually telling me.