Question
Download Solution PDFA 6 V battery is connected across a resistance R. The current through R is 0.4 mA. What will be the value of R?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Ohm’s law: At constant temperature, the potential difference across a current-carrying wire is directly proportional to the current flowing through it.
i.e. V = IR
Where V = potential difference, R = resistance and I = current.
EXPLANATION:
Given - V = 6 V and I = 0.4 A
- According to ohm's law, V = IR
- The above equation can be written for resistance as
\(\Rightarrow R = \frac{V}{I}=\frac{6}{0.4\times 10^{-3}}=15\times 10^{3}\, \Omega=15\, k\Omega\)
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