Answer:
The potential difference across the plates is 226 V.
Explanation:
Given;
area of the capacitor plate, A = 0.2 m²
separation, d = 0.1 mm = 0.1 x 10⁻³ m
charge on each plate, Q = 4 x 10⁻⁶ C
Charge on the capacitor is given by;
Q = CV
Where;
C is the capacitance of the capacitor, given as;
C = ε₀A / d
Then, the potential difference across the plates is given by;
Therefore, the potential difference across the plates is 226 V.
Answer:
The change in temperature is
Explanation:
From the question we are told that
The temperature coefficient is
The resistance of the filament is mathematically represented as
Where is the initial resistance
Making the change in temperature the subject of the formula
Now from ohm law
This implies that current varies inversely with current so
Substituting this we have
From the question we are told that
Substituting this we have
=>