When 18V voltage is applied to a certain section of conductor, the current passing through it is 0.6A, then the resistance to the body is () ohm. If 9V voltage is applied to this section of conductor, the current passing through the conductor?

When 18V voltage is applied to a certain section of conductor, the current passing through it is 0.6A, then the resistance to the body is () ohm. If 9V voltage is applied to this section of conductor, the current passing through the conductor?

30;0.3

If the voltage at both ends of the conductor is 6V and the current passing through the conductor is 0.3A, then the resistance of the conductor is______ Ω. If the power on time is 1min, the electric energy consumed by the conductor is______ J．

(1) ∵ I = ur, ∵ conductor resistance R = UI = 6v0.3a = 20 Ω; (2) power on T = 1min = 60s, electric energy consumed by conductor w = uit = 6V × 0.3A × 60s = 108j

The resistance type of an ammeter is 0.03 ohm, and the maximum current is 3a. If it is directly connected to both ends of a 1.5V dry cell, the current can reach less than a

I = u / r = 1.5v/0.03 Ω = 50a, the current can reach 50A

When the voltage at both ends of a resistor increases from 2V to 5V, the current through the resistor increases by 0.3A, then the resistance value of the resistor is____ .

Set: resistance bit X
2/x+0.3=5/x
x=10
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