MCQ
Conductivity of semiconductors due to increase in temperature :
- Aremains unchanged
- ✓decreases
- Cincreases
- Dfirst decreases and then increases
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Statement $I$ : A uniform wire of resistance $80\,\Omega$ is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be $5\,\Omega$.
Statement $II :$ Two resistance $2\,R$ and $3\,R$ are connected in parallel in a electric circuit. The value of thermal energy developed in $3\,R$ and $2\,R$ will be in the ratio $3:2.$
In the light of the above statements, choose the most appropriate answer from the options given below
The magnitude of current through ${R}=2 \,\Omega$ resistor at ${t}=5\, {s}$ is $....\,{mA}$.