Physics, 07.03.2020 04:51, dri16947

When additional resistors are added in parallel to resistors already present in a circuit the equivalent resistance of the the circuit increases. (Section 19.8)

a. True.
b. False.

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answered: aidentrooper8629

This is the false statement.

Explanation:

In this statement it is said that when additional resistance added in parallel to resistors , the equivalent resistance of the circuit increases which is false statement. Because when an additional resistance is added into the system parallel to the resistors already present inside the circuit the current flow inside the circuit increases. because there are more number of branches formed inside the circuit and due to this current flow inside the circuit increases and the equivalent resistance of the circuit decreases.

answered: Guest

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

answered: Guest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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