If the resistance of a resistor which is in series with two other resistors is doubled
- the current in that resistance is doubled.
- the volts drop across that resistor increases.
- the current in that resistance is halved.
Explanation
In a series circuit the same current flows through every resistor, so doubling one resistor cannot double or halve the current in it alone. Because that resistor now takes a larger share of the total resistance, by Ohm's law (V = IR) the voltage dropped across it increases.
Shawez asking:
why cant it be current halved?
Community Comments (1)
K
kahungu Posts: 1 23.04.2015 / 13:55
The current in series arrangement is constant hence the p.d increase.
Please Sign In to post a comment.