When the potential difference across a lamp is 3.3V the current is 0.15 calculate the resistance of the lamp and give the unit
1 answer:
Answer:
22Ω
Explanation:
Given parameters:
Potential difference = 3.3V
Current = 0.15A
Unknown:
Resistance = ?
Solution:
According to ohm's law, potential difference, current and resistance are related by the expression below;
V = I R
where V is the voltage
I is the current
R is the resistance
3.3 = 0.15 x R
R = = 22Ω
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Answer:
C. 101.5°C
Explanation:
The computation of the boiling point of a solution is shown below:
As we know that
where,
i = Factor of Van’t Hoff i.e 2KBr
K_b = Boiling point i.e 0.512° C
m = molality
Now place the values to the above formula
So, the boiling point is
After solving this, the t is
= 100° C + 1.536° C
= 101.536° C
Hence, the correct option is C.