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## Class 10 Physics (India)

### Course: Class 10 Physics (India)>Unit 3

Lesson 6: Solving a circuit with series and parallel resistors

# Solved example: Finding current & voltage in a circuit

Let's learn how to calculate current and voltage across each resistor in a circuit. Created by Mahesh Shenoy.

## Want to join the conversation?

• how did he get the 10 ohms at the end?
• Let us take:
R1 to be the 2 ohm resistor
R2 to be the 40 ohm resistor
R3 to be the 10 ohm resistor
So now, the equivalent resistance of R2 and R3 is 8 ohms and the resistance of the whole circuit would be (2 + 8) ohms = 10 ohms.
• Sir, why the current remains same in series connection and the voltage in parallel connection...
• what if i assume r1=2 ohm, r2=40 ohm, r3=10 ohm, calculate the current (I) and then substitute the values using the formula
V1= i into r1
V2= i into r2
V3= i into r3
??
is that the correct way too?
(1 vote)
• WHat if there's 3 or more
resistors in the parallel circuit and you have to calculate the volt drop between them?
(1 vote)
• How do you calculate the voltage if you have several emf's throughout the circuit?
(1 vote)
``P-----^^^-----Q``