In the following diagram, the voltage is 1.5 volts and the resistance is 7.5 ohms. Use Ohm's law to determine the current in the
2 answers:
Answer:
Current in the circuit, I = 0.2 amps
Explanation:
It is given that,
Voltage of the circuit, V = 1.5 volts
Resistance, R = 7.5 ohms
According to Ohm's law, the voltage is equal to the product of current and the resistance.
i.e.
V is the voltage across the circuit
R is the resistance in the circuit
I = 0.2 amps
Hence, the correct option is (d).
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Answer:
Q = 1.2*10⁻¹² C
Explanation:
- For any capacitor, by definition the capacitance C is equal to the relationship between the charge on one of the conductors and the potential difference between them, as follows:
- For the special case of a parallel plate capacitor, just by application of Gauss' law to a rectangular surface half out of the outer surface, and half inside it, it can be showed that the value of the capacitance C is a parameter defined only by geometric constants, as follows:
- So, due to the left sides in (1) and (2) are equal each other, right sides must be equal too.
- Replacing ε₀, εr (dielectric constant), A, d and V by their values, we can solve for Q, as follows: