Question
Download Solution PDFIf the voltage across the 4 Ω resistor is 20 V. Find the value of E.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 2):(50V)
Concept:
According to ohms law
V = IR
where
V is the voltage
I is the current
Ris the resistance
When two resistors are connected in series
The total resistor will be
RT = R1 + R2
Where the current I is the same in the series connection
Calculation:
The given circuit is
The total resistance
RT = 4 + 6
= 10 Ω
The voltage drop across the 4 Ω resistor is
V = 20
I = \(20 \over 4\)
= 5
Then
E = RT × I
= 10 × 5
= 50 V
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