Three of these are strong electrolytes:
- HCl (Hydrochloric acid)
- HNO3 (Nitric acid)
- NaOH (Sodium hydroxide)
Two of these are Weak electrolytes:
- HF (Hydrogen fluoride)
- HC2H3O2 (Acetic acid)
And the other two are Non-electrolytes:
- C6H12O6 (Glucose)
- C2H5OH (Ethanol)
Answer:
Explanation:
B = Magnetic field =
r = Radius of rim = 16 m
t = Time = 90 seconds
A = Area of rim =
EMF is given by
The magnitude of the induced emf between the hub and the rim is .
Answer:
Option D is the correct answer.
Explanation:
We equation for elongation
Here we need to find weight required,
We need to stretch a steel road by 2 mm, that is ΔL = 2mm = 0.002 m
E = 200GPa = 2 x 10¹¹ N/m²
L=2m
Substituting
Option D is the correct answer.
Answer:
(a). The rms load current is 1.08 A.
(b). The rms primary current is 0.108 A.
Explanation:
Given that,
Primary voltage = 120
Secondary voltage = 12
Load = 10 ohm
We need to calculate the number of turns in primary and secondary coil
Using formula of voltage
Put the value into the formula
We need to calculate the resistance
Using formula of resistance
Put the value into the formula
We need to calculate the current in primary coil
Using formula of current
We need to calculate the current in secondary coil
Using formula of current for secondary coil
Put the value into the formula
Hence, (a). The rms load current is 1.08 A.
(b). The rms primary current is 0.108 A.