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could anyone help me with this problem?
1. Homework Statement
An automobile gasoline gauge is shown schematically in Figure 2761. The indicator (on the dashboard) has a resistance of 10 . The tank unit is a float connected to a variable resistor whose resistance varies linearly with the volume of gasoline. The resistance is 200 when the tank is empty and 30 when the tank is full.
*Find the current when the tank is halffull*
2. Homework Equations
V=IR
3. The Attempt at a Solution
the current when the tank is empty is 12=I*200. so i multiplied that by two to get the answer but it was incorrect. i also tried to plug 15 into the equation since it's half of thirty but that too was wrong
1. Homework Statement
An automobile gasoline gauge is shown schematically in Figure 2761. The indicator (on the dashboard) has a resistance of 10 . The tank unit is a float connected to a variable resistor whose resistance varies linearly with the volume of gasoline. The resistance is 200 when the tank is empty and 30 when the tank is full.
*Find the current when the tank is halffull*
2. Homework Equations
V=IR
3. The Attempt at a Solution
the current when the tank is empty is 12=I*200. so i multiplied that by two to get the answer but it was incorrect. i also tried to plug 15 into the equation since it's half of thirty but that too was wrong
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