the acceleration or the next force acting on the body is constant
Resistance of the bulb is 7.5 ohms
Explanation:
- In a circuit, according to Ohm's Law, the potential difference (voltage) across an element is directly proportional to the current flowing through it.
That is, V ∝ I
⇒ V = IR, where R is the constant of proportionality called the resistance.
- Here, current, I = 0.4 A and potential difference, V = 3 V
Resistance, R = V/I = 3/0.4 = 7.5 ohms
Answer:
A
Explanation:
take note that v=d/t (velocity is distance over(divided by) time, so in this case it would be 200 (distance) divided by 2 (time)
Answer:
Explanation:
The resistance of a wire is given by the equation:
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
In this problem, we have a wire of platinoid, whose resistivity is
The length of the wire is
L = 7.0 m
And its radius is
, so the cross-sectional area is
Solving for R, we find the resistance of the wire:
