what is the resistance of a car light bulb that conducts 0.025A current when connected to a 12V car accumulator? is the current
1 answer:
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The statement “Impulse is a vector quantity” is true about Impulse.
Answer: Option B
<u>Explanation: </u>
The object’s action by applied force in a particular time interval, there happens changing in momentum called impulse. It is denoted by a symbol ‘J’ or ‘imp’ and expressed in a unit ‘Ns’. As impulse depends on the acted force, when a collision arises from front, behind or side, the force’s direction would be differed.
So, from this option A is false as impulse is not a force but changing momentum. The unit is not Newton, it is Newton second (Ns). The force direction differs (impulse direction) for each cases of collision, so option D also false. Hence, option B seems to be correct. Vector quantity deals with both direction and magnitude and important in motion study.
Answer : The total electric charge of electrons is,
Explanation:
Answer : The number of electrons transferred are,
Explanation :
First we have to calculate the number of electrons.
Number of electrons =
Mass of 1 electron =
Total mass of electron = 2.5 kg
Number of electrons =
Number of electrons =
Now we have to calculate the total electric charge of electrons.
Formula used :
where,
n = number of electrons transferred =
Q = charge on electrons = ?
e = charge on 1 electron =
Now put all the given values in the above formula, we get:
Thus, the total electric charge of electrons is,