we have this 1/Re = (1/R1)+(1/R2) for calculating the effective resistance when resistances are connected in parallel so the answer would be Re =( 70*30) / (70+ 30) = 21 ohms
As you have not supplied any information, other than the resistance of the individual resistors, there is no way in which your question can be answered.
The total DC resistance is (33+47) = 80 ohms.The total reactance is j(60+30) = j90 ohms.The total impedance of the string is [ 80 + j90 ] ohms,= 120.4 ohms at a phase angle of 48.37 degrees (both numbers rounded).
Set a Volt-Ohm meter to Ohms and put the two leads from meter across the fuse. One on each end where the metal is located. The meter should read zero ohms if the fuse is NOT blown.
Ohm's law: voltage is current times resistance 0.03 amperes times 1000 ohms = 30 volts.
The current through the wire can be calculated using Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R). In this case, the current would be 90 volts divided by 30 ohms, which equals 3 amperes.
For an end-result of 10 ohms, you can have 1 resistance of 10 ohms, or 2 parallel resistance of 20 ohms each, or 3 resistances of 30 ohms each, etc.
8.4
we have this 1/Re = (1/R1)+(1/R2) for calculating the effective resistance when resistances are connected in parallel so the answer would be Re =( 70*30) / (70+ 30) = 21 ohms
3
Ohm's Law: Current = Voltage divided by resistance90 volts divided by 30 ohms = 3 amperesBe careful if you try this, it is also 270 watts, so the resistor will get very, very hot. Also, since everything has a temperature coefficient, do not expect the resistance when hot to be the same as the resistance when cold.
30 ohms
When any number is divided by a negative number the result is negative. So, 120 / -4 = -30
83.3333
The expression -x divided by 30 can be simplified as -x/30. This means that you are dividing the value of -x by 30. The result will be a fraction where the numerator is -x and the denominator is 30. It can also be written as -(x/30) for clarity.
810/30=27
30 micro ohms